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English definition of “sew sth up”

sew sth up

informal phrasal verb with sew     /səʊ/ verb
to complete something successfully : He hopes to sew up the nomination by the end of the month .get/have sth (all) sewn up He aims to have the first deal sewn up early next year .
disapproving to control something completely so that no one else has a share of it: Our competitors have the adult market sewn up.
(Definition of sew sth up from the Cambridge Business English Dictionary © Cambridge University Press)
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